Radiator.



F. wENTwoRTH 1 L. F. cLAuslNG.

" RADIATOR.

kAPPLICATION FILED JAN. 12| 1914.

Patented My11,1915.

UNITED STATES PATENT OFFICE.y

FRANK B. WENTWORTH AND LOUIS F. CLAUSING, OF LOS ANGELES, CALIFORNIA.

RADIATOR.

Specification o! Letters Patent.

Patented May 11, 1915.

Application led January 12, 1914. Serial No. 811,591.

T0 all whom it may concern:

Be it known that we, FRANK B. WENT- woRTH and Loms F. CLAUsING, citizensof the United States, residing at Los Angele in the county of LosAngeles and State osf California, have invented a new and usefulRadiator, of which the following is a specifcation.

This invention relates to a radiator for use in connection with internalcombustion engines, and one of the main objects of the invention is toprovide a simple and economical construction which will give a largesize of tube for the passage of water, and to also provide corrugationsin the strips forming the walls of the water tubes, in such a way that agreatly extended length of tube is produced, giving the maximum coolingeffect.

Another object is to provide a. construction which will permit aexibility of the parts, thereby avoiding leakage caused from f plate.

strains.

Referring to the drawings: Figure 1 is a front elevation of a radiator.Fig. 2 is a side elevation of a portion of the radiator. Fig. 3 is asection on line L-", Fig. 2. Fig. 4 is a plan view partly in section ofVa portion of the radiator. Fig. 5 is a front elevation of a water tubeunit.' Fig. 6 is a side elevation of a spacing plate. Fig. 7 is a frontelevation of a corrugated plate partly broken away, before being formedinto either a spacing plate or `water tube plate. Fig. 8 1s a sideelevation. in. detail of one of the plates forming a water tube. Fig. 9is a side elevation of another plate forming the other member -of thewater tube. Fig. 10 is a perspective view in detail of a corrugatedplate before being formed into either a water tube In the presentembodiment two forms of plates are employed, each plate first bemgformed in asuitable machine, as a simple vcorrugated plate l, shown indetail in Figs.

7 and 10. From this simple form each of the different forms of platesare produced. Two of plates 2 and 3 shown respectively in Figs. 8v and 9are formed to constitute the two members of a water tube, and a platevform 4 shown in Fig. 6, is employed as a spacing plate. The water tubeplate 2 is changed from the simple corrugated plate l shown in Fig. 10,to its form shown in Fig. 8, by placing it in a press, together plate ora spacingl that when the dies of the press come to-` gether, thecorrugated portions along each slde of the plates are brought into closeand perfect union with each other, while the center portions are keptapart from each other by the interposed strip of metal whlch is thenwithdrawn, thus leaving a water conduit 5 between the two plates 2 and3, extending transversely of the corrugatlpns, thewater conduit having a`cross sectlonal area of varying shape and dimenslons. The crosssectional area of the water condult thus formed is not actually reducedto the elongated slot-like aperture 5 seen in Fig. 4, this-slot-likeaperture being substantlally the shape of the strip of metal which hadbeen laid between the plates to keep them from coming together, but theconduit 1s wider than this and longer, on account of the peculiarformation resulting from the lcorrugations in the two plates which gotoform the water tube unit. Thus in Fig. 4; the maximum horlzontal widthof the wate' conduit extends from the wall a of plate 2 to the Wall b ofplate 3. These two walls converge toward each side of the plates 2 and 3as at' c and d, and the plates 2 and 3 are in perfect union with `eachother along the portions 8. An absolutely perfect t along the edges at ebetween the two plates is'secured by .reason of the fact that at thispoint, the intermeshing corrugations, which are already in fairly goodtit, are both subjected simultaneously to the action of the same dies,with the result that if `there is any inequality in the shape of thedies vat any point, both plates 2 and- 3 will both be pressed` toconform to such irregularities, so that both will exactly lit eachother.

This perfect union at'this point is vei'y limwill be seen by referringto the section line in Fig. 2. These convolutions in the water `passagegreatly increase the area of radiating surface to which the water issubjected in passing through the water tube, and give a maximumradiating effect. In the next uppermost portion of the sectional view,the water. passage 5 is.constricted at intervals, due to the peculiaryangle of the corrugations, and this section of the water tube which liesat each sideof the central 6rtion of the conduit, givesadditional raiating surface. The cross sectional area of this part graduallydiminishes until it vanishes entirely at th'e point where the two platescome together as at e.

IThe water tube units are assembled togetheru with. the conduits v5extending vertically and the convex` projections of one water tube areexactly in' register with the concave portions of the next water tubeunit, but between the two units is a spacing plate 4, as clearly shownin Fig. 3, theconvex projec-A tions of the spacing plate 4 touching theconvex projections of the water tube unit, which thus provides airpassages 7 which extend transversely to the water conduits 5. Eachspacing plate 4 is originally a simple corrugated sheet l, as in Fig. 7,but before being assembled is placed in a press and the central portionsof the crest of the corrugations flattened somewhat, as at 8. It shouldbe understood that this flattening is .very much less than is giveneither plate 2 or 3,

and the method vby which it is flattened is. different in thattheoperation is performed entirely by the dies directly against thecorrugations, whereas in the case of the tube plates, the two plateswere simultaneouslyv placed in the press with the interposed strip ofmaterial. `'The iiattened portions 8 of the plate 4 are so arranged thatthey exactly register with the iattened surfaces of the tube plateswhich are formed at the back walls of the cavities 6, and the flattenedsurfaces 8 of the spacing plates are soldered to the correspondingiattened surfaces of the tube plates, which gives a greater area ofcontact between the spacing plates and water tube plates solderedtogether so that' perfect heat conductivity is obtained andcorresponding heat radiating qualities are secured. The convex portionsof the spacing .plates are soldered to the convex portions of the watertube units, so that the radiator becomes a solid structure with allparts in vperfect heat conducting relation, thereby insuring the maximumradiation.

The circulation of the water through the conduits 5 causes smallcascades to form at the lateral recesses, which, together with the areaof the surface with which the water comes in contact, gives ythe desiredcoolingefect The inclinedwalls o, d, are

at an angle to the air passages 7 and thus present surfaces `g'iinstwhich the air must impin e and thereby give a greater radiating e ectthan where the walls are exactly parallelto the passage of the. air andthere is no impinging of the air against the walls.

By reason ofthe corrugated shape of the plates, it gives the metal achance to bend bel tween the joints where it is soldered, Athus giving agreat flexibility to the radiator,

'nsl

which obviates leakage, which is otherwise apt to occur when theradiator is strained.

What we claim is: 1. A water tube unit for radiators comprising a pairof opposed metal plates joined along thelr longitudinal edges', theplates.

having transverse corrugations extending across their entire width, andthe convex portions of one plate projecting into and tting the concavelportions of the other plate, -the crests ofthe corrugations beingflattened, and theliattened portions extending a slight distance oneach' side of the longitudinal center of the section, and the platesbeing spread apart along their lon gitudinal center to provide a waterchannel( 2. A radiator comprising a plurality of water tube units, each'unit consisting of a pair of similar plates formed with transversecorrugations extending across their entire width, the plates beingIsecured together attheir longitudinal edges with the convex portions ofone plate projecting into and ttmg the concave portions ofthe otherplate, the inner crest portions of the corrugations being flattened oneach side of 'the longitudinal center of the section, and the -iattenedportion of one section being disposed in spaced parallel relation to theflattened portion o the other section, thereby providing a waterchannel, and. the uniati tened-portions of the corrugations formingblind lateral channels in communication at their inner ends with theiirst mentioned channel.

3. A radiator comprising a plurality ofl' water tube units, each unitconsisting of a pair. of nested transversely corrugated plates, thecorrugations extending entirely across said plates, the plates beingunited along longitudinal edges and being spread Y apart intermediatetheir united edges to form water conduits the crest portions of thecorrugations being flattened intermediate their ends, the corrugationsin the plates o pair ofnested, vtransversely corrugated plates, thecorrugations extending entirely across said plates, the plates beingunited along their longitudinal edges and being spread apartintermediate their united edges to form water conduits, the crestportions of the corrugations being attened intermediate their ends, saidcorrugations providing air passages transverse to the water conduits,and spacing plates between the units, each spacing plate havingcorrugations with flattened central portions secured to correspondingintermediate portions of the water tube units, and the convex portionsof the spacing plates being soldered to the convex portions of the watertube unit.

5. A radiator comprising a plurality of water tube units arranged inparallel relation to one another, each unit consisting of a pair ofnested, transversely corrugated plates, the corrugations extendingentirely across the plates, the central portions of the crests of thecorrugations being flattened, and the plates being spread apart alongthe line oftheir longitudinal centers to provide a longitudinal waterchannel substantially rectangular in cross section, said channelextending at right angles to the corrugations, the plates convergingfrom the said edges of the channel to their united longitudinal edges,thus providing blind lateral channels communicant at their inner endswith the rst mentioned channel, the concave portions on the exterior ofthe plates providing air passages, and a transversely corrugated spacingplate between each pair of water units, crest portions of thecorrugations of each spacing plate being flattened intermediate theirends, and the iattened portions being opposed to and secured to theexterior flattened portions of the water units.

In testimony whereof, we have hereunto set our hands at Los Angeles,California this 5th day of January, 1914.

FRANK B. WENTwoR'rH. Louis F. cLAUsiNG.

In presence of- G. T. HACKLEY, LORRAINE E. DURROW.

